1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
KengaRu [80]
3 years ago
10

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics
1 answer:
Mrac [35]3 years ago
4 0
<h3>Answer:  3 mph</h3>

====================================================

Work Shown:

c = speed of the current

Downstream:

d = r*t\\\\2.4 = (21+c)*t\\\\t = \frac{2.4}{21+c}\\\\

Upstream:

d = r*t\\\\1.8 = (21-c)*t\\\\1.8 = (21-c)*\frac{2.4}{21+c}\\\\1.8(21+c) = 2.4(21-c)\\\\37.8+1.8c = 50.4-2.4c\\\\1.8c+2.4c = 50.4-37.8\\\\4.2c = 12.6\\\\c = \frac{12.6}{4.2}\\\\c = 3\\\\

Speed of the current is 3 mph

You might be interested in
What is a real world problem that could be modeled by dividing two rational numbers
larisa86 [58]

say, you have half a pie, and 2 sisters, if you divide the half-pie in 3 equal pieces, how much is everyone getting of the whole pie?  well, is the quotient of 1/2 and 3.


\bf \stackrel{pie}{\cfrac{1}{2}}\div \stackrel{siblings}{3}\implies \cfrac{1}{2}\div\cfrac{3}{1}\implies \cfrac{1}{2}\cdot \cfrac{1}{3}\implies \stackrel{\textit{each one gets}}{\cfrac{1}{6}}

6 0
3 years ago
6.  
EastWind [94]
The second question is biased
3 0
4 years ago
Read 2 more answers
Okay so we have this question of the week thing and this week our answer is 8 so i need a algebra problem that is a two step equ
In-s [12.5K]

Answer:

If carl went to the grocrey store and spent 4 dollars x and drove two miles how much gas what would the gas money be if his total was 8 dollars

Step-by-step explanation:

now can you answer my question

6 0
4 years ago
Read 2 more answers
Solve the following equation for x: 2x + 5y = 8.
AleksAgata [21]

Answer:

x = -5/2 y +4

Step-by-step explanation:

2x+5y = 8

Subtract 5y from each side

2x+5y -5y = -5y+8

2x = -5y+8

Divide each side by 2

2x/2 = -5y/2 +8/2

x = -5/2 y +4

5 0
4 years ago
(3x3 + 11x2 + 4x + 1)/ (x2 + x)
lions [1.4K]
If those are exponents, then...

3x^3 + 11x^2 + 4x + 1
-----------------------------               Cancel out the 11x^2 with the x^2
          x^2 + x

3x^3 + 10x^2 + 4x +1
-----------------------------               Cancel out the x with the 4x
                 x

3x^3 + 10x^2 + 3x +1
6 0
4 years ago
Other questions:
  • in Farm A, 4/5 of the number of sheep are equal to 1/2 of the number of sheep in farm B. The total number of sheep in farm A and
    15·1 answer
  • Megan leaves her house at 4:15 to go soccer practice. It takes her 35 minutes to get there. Her practice is two hours long. Then
    8·1 answer
  • Which triangle correctly shows that the side opposite the larger angle is the larger side? A triangle has side lengths of 13, 5,
    12·2 answers
  • The diameter of a circle is 6 units.<br> What is the radius of the circle?<br> -khan academy
    11·1 answer
  • Q1<br> 0.06 million = 6.2 thousand =<br> Give your answer to two de
    10·1 answer
  • I need help with this
    11·1 answer
  • The expression 5 1/2x + 6 represents the perimeter of
    12·2 answers
  • Find the explicit formula for the given sequence 2, 4, 8, 16...
    12·2 answers
  • Graph the rational function <br> f(x)= 2x + 3 / x - 4
    14·1 answer
  • N/15=21/35 Solve for the missing value in the proportion.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!